I have a bobcat steer 310 (very old). the wiring was bad and got it fixed at the bobcat dealer in AR. the fixed the wiring and they said that the motor is fixed and running but when they were going to make it run, the machine was making a loud sound like a sleeping belt. they said it is because the two way switch and because is old they can not find it. I said can by pass it and make is single speed they said no they are not authorize to do that. Now I delivered it to another shop for getting it fix. They call me today and they said it does start and ideal for short time and dies . please help what is wrong with it?